Mold for concrete orchard heaters



J. P. N. WOOD MOLD FOR CONCRETE ORCHARD HEATERS Filed Oct. 21, 1924 g ss t 1 May 18 ,1926.

J. P. N. WOOD MOLD FOR CONCRETE ORCHARD HEATERS Filed Oct. 21, 1924 2Sheets-Sheet 2 TWIN T I mwm Patented May 18, 1926.

.TQHN' PAUL NICHOLAS V7003), OF DUNDEE, FLORIDA.

MOLD FOR CONCRETE ORCHARD HEATERS.

Application filed Getober 21, 1924. Serial No. 744,924.

The object of the invention is to provide a heater of the particularform to most effectively radiate the heat of a given quantity of fuel sothat the maximum eil ect may be obtained. as in the heating of orchardsand the like to protect the trees from frost and chilling blasts; toprovide a heater readily constructable from a plastic material so thatit may be built at the point of use and constitute a comparatively smallloss in the event of breakage; and to provide a cast in which the mostdispatch.

Y'Vith these objects in view, the invention consists in a constructionand combination of parts of which a preferred embodiment i illustratedin the accompanying drawings, wherein Figure l is a side elevationalview of the heater.

Figure 2 is a plan view.

Figure 3 is a section on the line 3-3 of Figure 1.

Figure 4- is a side elevational View of the mold.

Figure 5 is a horizontal sectional view on the plane indicated by theline 5-5 of Figure Figure 6 is a vertical sectional View on the planeindicated by the line 66 of Figure 4.

Figure 7 is a perspective view of one of the elements of the mold whichdefines the lower draft apertures of the heater.

Figure 8 is an elevational view, partly broken away, of the heatercover.

Figure 9 is a detail sectional view of the oval form defining thelateral craft openings in the heater.

The heater 1, which is adapted for casting either in Portland cement,clay or like moldable material, is of inverted frusto-conical formprovided at its upper or larger side with the handle elements 2consisting of angular metal pieces of which one arm is embedded in thematerial of the heater in the casting of the latter. Preferably twohandles are provided at diametrically opposite sides but in order thatthe heater may readily sit in upright position, the feet- 3 areprovided. There are of these and they are likewise formed of angularmetal pieces of which one arm of each is embedded in the material of the55 heater.

Intermediate between the feet 3, draft heater may be made with thepreferably three openings 4t are provided below the plane of apreferably cast iron grate 5 frictionally bearing on the interiorslanting wall of the heater and of a diameter suflicient to space itabove the plane of the feet 3 and thus pro vide an air chamber below theg ate into which air is admitted through the openings 4. Likewise draftopenings 6 are provided in the side wall and extend a substantialdistance in the direction of the height of the heater.

In the use of the heater, the fuel is de posited in the latter on top ofthe grate. 5 and having been properly ignited is kept burning by airentering through the perforations or openings in the grate and throughthe slotted openings 6 in the side wall and the heater being offrusto-c0nical form, the lateral distribution of the heat of the fuel ismore readily effected than were it of cylindrical formation. Also theconical form provides for a more even draft, making for the slowerconsumption of the fuel. Made in cement or fire clay, it is practicallyindestructible and will withstand the elements indefinitely but shouldit be broken, it is susceptible of quick reproduction in a properlyconstituted mold.

When not in use, it is designed to cover it at the top and to this end asheet metal covering 7 is provided having a peripheral flange 8 in whichat diametrically opposite sides the bayonet slots 9 are formed, thebayonet slots engaging the handles and serving, together with them, ameans for interlocking the cover in place so that it may not be blownoff during wind storms and may thus protect the fue fr in dampness whenthe heater is not in use, the handles constituting means fortransporting the heater from place to place.

In order to mold the heater, an interior core 10, preferably of metal,is provided, this core conforming to the interior contour of the heater,and in the casting process seating within the outer form consisting ofthe complemental elements 11 formed on their edges with rolled portions12, those on the one element standing between those on the other elementto provide a series of intercurrent rolled barrels engageable by rods14; inserted through them and provided at their upper ends with eyes 15constituting means by which they may be withdrawn and inserted. At thelower edges, the elements 11 are recessed, as indicated at 16, toprovide clearance spaces for the feet 3 inthe casting process and at theupper edges -ith recesses 17 to provide similar clearance spaces for thehandles 2.

Radial arch plates 18 are disposedat the bottom between the core and theforming elements ll to define the spaces which result in the draftopenings 4 in the finished heater. Likewise to provide for the lateraldraftopenings, the oval forms 19 are employed and disposed between thecore and the forming elements in the casting or. forming' process.

The invention having been described, what is claimed as new and usefulis:

A. i nold. "for casting an inverted frustoconical bowl, the sameconsisting o'i an inverted metro-conical cor-re, ,an exterior moldingmember disposed in. surrounding relation to the core and consisting oftransversely semicircular elements of which each on its opposite edgesis provided with rolled portions constituting barrels arranged inintercurrent relation with corresponding barrels on the oppositeelement, rods insertahle through said barrels to hold said elements inengaged relation, radial arch plates disposed between the core and theexterior molding member adjacent the bottom oi the core and moldingmember, and oval forms disposed between the core and molding member andat an intermediate point in the height of the latter said arch platesand forms defining lateral openings inthe molded product.

In testimony whereof he affixes his signatore JQHN PAUL NICHOLAS 7001),.

